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H

Harmonic Frequency

Any frequency that is a multiple or submultiple of the supply frequency. 
First harmonic is the same as the fundamental frequency. 
Second is twice the fundamental frequency
Third is three times bla bla bla, you get the picture.

Heat

Energy


Hysteresis motor

Hysteresis motor is defined as a synchronous motor that is having cylindrical rotor and works on hysteresis losses induced in the rotor of hardened steel with high retentivity. It is a single phase motor and its rotor is made of ferromagnetic material with non magnetic support over the shaft.

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